I rang them and asked. I mentioned that I'm a street size 8 and take a 7.5 in anasazis a 6 in muiras and based on that they advised that I get a 42. I'm not completely convinced but they're on the way so I'll let you know when they arrive.
I'm a street size 9-9.5, wear an 8 in lace-ups and am a 41 in Stix.
I wouldn't panic till you get them. My feet are a bit funny and I've got the Stix pretty tight. (They are remarkably comfy for the size and style of shoe). I bought them as a board/training shoe but use them for steep bouldering and sport as well now. Starting to prefer them to my white lace-ups!
Lets discuss the slack heel on them though!!
I've just opened the invoice note and written on it is the following:"Hi Ben, I think I may have suggested a 42 on the phone, but in retrospect a 41 is probably more accurate."Sure enough, they've sent a 41. Now that's good service!
You've only recently started climbing right mate? I wouldn't bother with these shoes if I were you as they are way too downturned and specialised for your needs. Get the refund and spend the cash on something more that gives more allround performance.